Originally Posted by kleeblatt

Use AirBnB or VRBO to find an apartment to suit your needs in Paris. You should be able to find something for under $250/night,

Originally Posted by scdreamer

I second the suggestion of finding an apartment in Paris - there are plenty of legitimate licensed apartments within your price range - and by doing so you will save on transportation (and time) traveling in and out of the city, as well as being able to have some meals in your kitchen, especially breakfast. Having a kitchen is a great way to save money, especially for a family. Also so much more room to spread out in an apartment rather than hotel rooms, and you can choose a neighborhood in Paris that will offer a good experience.

If you look at airbnb, make sure there is a license number, and also look for "superhosts" to rent from. We've had great luck doing this.

Originally Posted by Seamus

Agree with the suggestions to stay within the city. You've got a good head start for finding a place for next summer. I just had a quick look at random two week dates next June and saw several AirBnB properties that would met your needs. At your price point it will not be luxurious but there are places that are more than adequate. Based on our years of experience in renting apartments in Paris, I'd suggest you keep these things in mind:

• location (residential vs commercial, how far to closest public transport, metro or bus, grocery, bakery nearby, laundromat if no washer/dryer in the apartment?) Your price point may restrict you to other than the most central areas, but if you are close to a Metro stop you'll be fine.
• square footage (usually expressed in square meters, each of which is roughly 10 sq ft) urban European properties tend to be more compact than in the US
• number of beds/baths - suggest you look for two bathrooms - may be billed as shower room/salle de douche and bathroom with tub/salle de bain - as well as two WC's. In many places the WC will be separate from the shower/bath room.
• on which floor of the building (European first floor = US second floor) and is there an elevator if on a higher floor?
• If the place overlooks a busy street, are the windows double glazed?
• You can add filters for number of beds and baths as well as max nightly price. The composition of your family (ages, gender) would affect the number of bedrooms you would need.
• Air conditioning will limit options/raise price but if you are traveling in the summer it may be worth it. We've been in Paris during a heat wave in a non-A/C place and it was pretty miserable

Once you've found a few possibilities you can come back and ask about the specific properties (providing a link to the property makes it easier for Fodorites to respond.)